snyder



S. SNYDER.

CONTROLUNG DEVICE FOR GYRATOHY BOLTERS.

APPLlCATON FILED JUNE 28. 1918.

,1 ,823 329. Patented Dec. 2,1919.

'2 SHEETS-sum l.

"S. SNYDER.

CONTROLLING DEVICE FOR GYRATOHY BOLTERS.

APPLICATION FILED JUNEza. 191s.

1,323,329. Patented Dec. 2,1919.

C'Q. /f

2 SHEETSSHFET 2.

UNITED STATES PATENT OFFICE. y

SIMON iS.|\.I`YDIE}}3 0F MUN CY, PENNSYLVANIA, ASSIGNOR TO SPROUT, WALDRON & COMPANY, .OF MUN CY, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

coNTnoLLING DEVICE Fon GYRATORY' :aoLTERs v Specification of Letters Patent.

Application led June 28, 1918. Serial No. 242,456.

To all whom it 'may concern: I

Be it known that I, SIMON SNYDER, a citizen of the United States, residing at Muncy, in the county of Lycomingand State of Pennsylvania, have invented certain new and useful Improvements lin Controlling Devices for Gyratory Bolters, and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to 'make and use the running gyratory movement of the sievestructure and to prevent or reduce to a minimum the jerking and irregular move-4 ments of the sieve with consequent vibrations and injury to the building, which is incident to the use of devices of this character as heretofore ordinarily constructed.-`

Other objects are to provide improved antifriction bearings and means for suspending the driving shaft therefrom with provision for universal movement of the shaft'to permit a gyratory movement of the sieve structure and driving shaft journaled therein, together with an underneath controlling device that will prevent excessive gyration or wabbling of the machine -in starting and stopping.

The invention will first be hereinafter more particularly described, with reference to the accompanying drawings, which form' a part of this specification, and then pointed out in the claims at` the end of the description.

In said drawings v Figure 1 is a side elevation partly in section of the driving mechanism and associated parts of a gyratory sifter or bolting machine embodying my invention.; Y

Fig. 2 is avvertical sectional View on anenlarged scale, of the overhead anti-friction radial and end thrustbearing with means for suspending the driving shaft so as to permit a universal pivotal or swinging movement thereof;

disposed with respect vto the thrust limit-` -ing flange, and,

Fi 5 1s a similar view taken on said line 4 5 showing the lower shaft section displaced laterally, or in'starting position.

In said drawings, in which the same reference letters are used to denote corresponding parts in diiierent views, the letter A may denote a portion of the sieve structure or frame, which may be of any suitable form such as ordinarily employed in this class of Patented Dec. 2, 1919.

machines, and designed to be suspended from theceiling by resilient rods or reeds such as are commonly used for this purpose. v

i The driving shaft B, is journaled within ings, as shown, and has coupled thereto at its upper end, so as to movement thereofy in the direction of its length while imparting a rotary movement thereto, the lower end of a shaft section B1, which is suspended from the ceiling, or an overhead support, by means of a lbracket or hanger C, having a depending tubular part c, f cup-like form, into which the upper-end of the shaft section B1, extends. Said shaft sectionBl, has secured thereon an anti-friction bearing D, which is preferably of the form known as the S. K. F. self-alining ball bearing, consisting vof two concentric rings, one of which, in this instance the inner ring,

permit a limited the sieve structure, preferably in ball bear.

has annular grooves or ball .races therein,

each'group to a radius slightly larger than the radius of the balls, whilethe other or l outer race is ground in the form of atsection of a hollow sphere, s0 that the balls are freey formed 'with a reduced extension on which is fitted a sleeve or collar which is preferably formed or provided with a reduced extension b1, on which the inner bearing l ring d is fitted, so as to rest upon the shoulder at the base of the reduced extensionL b1, and a nut b2, is screwed upon the threaded end of the shaft section so as to clamp said inner ring and the collar Z), between it and the shoulder at the base of the reduced extension of the shaft; thus securing the radial bearing upon the shaft in such manner that it will 'partake of the longitudinal. movements of the shaft, while the inner ring rotates therewith; the outer ring (Z1, being relatiyely stationary but adapted to slide in the direction of the length of the shaft to accommodate itself to the movements of the shaft. The shaft is supported or suspended upon an end thrust bearing D1, within and resting upon, a pendant tubular cup-like portion C1, of the hanger C; said thrust bearing` being preferably of the. type known as the S. K. F. self-alining thrust bearing, consisting of upper and lower rings (l: and di, having annular grooves in their confronting faces and balls ruiming in said groovcsl the under side of the lower ring being spherical and seated upon a correspondinglvv-shaped spherical surface of a hase ring or washer dt, whereby the desired swinging' or universal pivot-al movement of the shaft is permitted. Said lower ringor washer (Zt, is seated upon an inwardly extending annular flange at the lower end of the tubular hanger member C1, which is formed or provided with an exterior annular ange c1, which maybe A secured to the pendant tubular lportion c, of the hanger by set .screws passed through apertures in said flange cl, and screwed into threaded holes or sockets in the lower end or part c, of the hanger.

als a means for lubricating the shaft bearing and imparting rotary movement to the shafta .l provide a pulley l, which may be formed or provided with a substantially semi-globular oil cup or vessel El, inclosing the pendant tubular portion ofthe hanger and having av hub portion c, which is made fast on the shaft by means of a set screw el, or other fastening device; said hub portion being provided with :i itable stutling box, as shown, to prevent leakage of the lubricant down the shaft. For convenience in oiling the bearing, an oil pipe F7 may have one end connected with an aperture through the upper wall of the tubular part of the hangen and provided with a compression cu i F1. on its free end.

rThe intermediate section B, of ie c `iving shaft is ireferably gournaled in a .ball bearings. within the frame stru. and

has secured thereto an unbalani or `weights G, such as are con'lmonly ploved in gyrating machines7 and is piovided with a. coupling member between it and the upper shaft section B1 of sur tia-ll); the same construction as the ball nearings andlcoupling member shown in a joint application of myself and one Lloyd lllinegardner. Serial No. 150,057, filed Februar;y 21, 1917, and as such bearings and coupling` member form. no part of my present invention further description thereof such as have heretofore been used for theY same purpose. To this end. there is secured on the lower end of the shaft B, an eccentric pin or shaft section B2, and an eccentrically supported rcvoluble load or weight l, which projects from the shaft in the direction of the unbalanced weights (il. and which load or weight during the rapid.rotation of the shaft, is centered coincident with the axis of, revolution, but thrown outwardly, in stoppingand starting. by centrifugal force, in the direction in which the weights extend. The weight 1, as shown, has an openin;1 through its center into which the lower end of' the shaft section B2, extends and is formed or provided with a tubular extension if which is co-incident with said opening. To prevent undue friction and permit longitudinal n'iovement of the shaft. the lower end thereof is formed or provided with a reduced extension 72?', on which is screwed a nut b4, between which and the shoulder at the base of said reduced eXtension is secured the inner ring or race meinber of an annular ball bearlng D2, preferably of a well known type consisting of two concentric rings with grooves in their confronting surfaces and a series of balls therebetween running in said grooves; the outer ring being slidably fitted within the socket of the eccentrically supported weight so as to permit sidewise movement thereof longitudinallyv of the shaft. The depending tubular extension z' of the weight I, enters a circular opening formed by a thrust limiting flange 7c, at the apex or top of a pedestal-like floor plate K, so as to contact therewith when thrown outwardly in stopping or starting and prevent lateral movement of the shaft beyond the point of contact. To eliminate or deaden the sound, a washer L, of wood or other suitable material, mayv be placed between the weight I and tht top of the pedestal, and a strip M, of leather or other suitable material ma;v be placed around the part i of the weight to faciiltate rotation of the latter when it contacts with the thrust limiting flange 'and also to deaden the sound.

As will be seen, when the machine is at rest or has yattained the desired speed of rotation, the eccentric pin and the load or weight thereon will be centered with the pin co-incident with the axis of revolution, but in starting or stopping, the weight or load I will be thrown outwardly by centrifugal force until the tubular pendant portion thereof contacts with the thrpst limiting iiange t' whereupon the weight or load, by virtue of such contact, will be caused to rotate in a direction opposite to the direction 'of rotation of the shaft, as indicated by the arrows in Fig. 5 of the draw# ings, with the result that the'desired speed of rotation will be attained and the shaft brought back to the center of revolution eX- peditiously, quickly, and noiselessly, owing to the counteracting forces generated by the oppositely rotating weight and shaft, thus producing a smooth and evenly running motion without the jerking and irregular movements in starting and stopping which are incident to the use of machines of this type, as heretofore ordinarily constructed.

. shaft and having a pendant projection, and

a thrust limiting flange having a circular opening therein to receive said projection; said. flange. being adapted by rolling contact with said weight to produce a rotary movement thereof in a direction opposite to the directionof rotation of the shaft.

5. In combination, a flexibly suspended sieve structure, a driving shaft therefor car rying an eccentrically arranged pin or shaft section, and an eccentrically supported load or weight carried yby and revoluble on said shaft section underneath said sieve structure,

a circular thrust limiting flange on whichk said weight rests, said weight having a centrally disposed socket and co-inciden-t porshaft and adapted to rotate in a direction opposite to the direction of rotation of the shaft and to permit movement of the shaft p in the direc-tion of its length.

2. A controlling device for gyrating machines comprising a stationary oor plate of pedestal-like form having a circular opening through its top to provide a thrust lim- .iting flange, a driving shaft suspended from above and carrying at its lower end an eccentrically arranged pin or shaft section on which is secured a weight having a, centnally disposed extension protruding into said opening, said weight being journaled on said shaft section so as to rotate independently thereof and in an opposite direction thereto while permitting independent movement of the shaft in the direction of its length; there being an annular space separating said extension and surrounding iiange.

3. In a gyrating machine including a flexibly suspended sieve structure and a driving shaft therefor, a controlling device comprising a revoluble eccentrically supported load or weight. on the shaft and tion projecting into the opening through said flange and said shaft having lts lower end jonrnaled in said socket.

6. In combination, a flexibly suspended sieve structure, a driving shaft therefor, and an underneath controlling device consisting of a floor plate of pedestaldike form vhavinlg a circular opening through its top, a weightresting on said pedestal having a tubular part projecting into said opening, said weight having an opening therein co-incident with said tubular part, and van eccentric shaft section on which said weight is revolubly'secured; said shaft section having an annular ball bearing thereon fitted in said -tubular portion of said weight; said bearing consisting of concentric rings with balls therebetween, one ring being carried by and rotatable with the shaft and the other ring being relatively stationary but slidable sidewise longitudinally of the shaft.

7. In a gyrating machine, an underneath controlling device comprising a floor plate or pedestal having an annular thrust'limiting flange at its top, a driving shaft having an eccentrically arranged pin or shaft section depending therefrom carrying a weight revolubly mounted thereon and resting on said top, a sound deadening Washer interposed between said weight and top, said Weight having 'a depending centrally disposed tubular extension protruding through said thrust limiting iange and an opening therethrough co-incident with said eXtension, a flexible lining encircling said eXtension, and an eccentric pin or shaft section having a, bearing within the socket formed by said opening and tubular extension.

8. The combination in a gyrating ma.- chine, of a sieve structure freely suspended for gyration, a driving shaft having an intermediate section journaled in bearings carried by and centrally disposed within saidv sieve structure, eccentrically connected upper and lower shaft sections, an overhead support from which said upper shaft section is suspended with provision for universal pivotal or swinging movement thereof, said upper shaft section being coupled to said intermediate section so as to revolve therewith while permitting a limited movement thereof in the direction of its length, and said lower shaft Section having a weight surrounding it and revolubly connected thereto, together with a lthrust limiting flange, and means whereby the shaft and Weight are caused to rotate in opposite directions in starting and sto ping.

ln testimony whereof I a X my signature in the presence of two witnesses.

SIMON SNYDER. Witnesses:

STEPHEN SoAns, N. L. VREDENBURG. 

